Q. The most useful MR sequence for evaluating the progression of
myelination during the first 6 months of life is
a.T1W
b.T2W
c.FLAIR
d.SW images
e.MR tractography
Ans.---a
During the first 6 months of life, T1-weighted images are most useful for evaluating the progression of myelination. Inversion recovery images also provide improved T1-weighted contrast differences between tissues. After 6 months of age, most cerebral white matter appears high in signal intensity on the T1-weighted images, and beyond this time the T2-weighted images are generally relied on to further evaluate myelin progression. By 24 months of age, the process of myelination is essentially complete except for the terminal zones of myelination found in the occipital-parietal periventricular white matter
a.T1W
b.T2W
c.FLAIR
d.SW images
e.MR tractography
Ans.---a
During the first 6 months of life, T1-weighted images are most useful for evaluating the progression of myelination. Inversion recovery images also provide improved T1-weighted contrast differences between tissues. After 6 months of age, most cerebral white matter appears high in signal intensity on the T1-weighted images, and beyond this time the T2-weighted images are generally relied on to further evaluate myelin progression. By 24 months of age, the process of myelination is essentially complete except for the terminal zones of myelination found in the occipital-parietal periventricular white matter
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